Method of uakotg bolt holding devices



Sept. 6, 1932. E c. BAYNES METHOD OF MAKING BOLT HOLDING DEVICES FiledMay 27. 1951 w/w W J a flv y U N ,5 WWWWWIWHWHWW INVENTOR 121222 Y 21Amoco} Jud mg. ATTORNEY Patented Sept. 6, i932 UNITED STATES nnwnnn c.rams, or rmmenm, memo r nn'rn'on or mine norm nonnme nnvrcns Applicationfiled Kay 27,

This invention relates to bolt holding devices and particularly to suchdevices made -in one piece from ablank of sheet metal. An object of this13 the character described above includmg a longitudinally, split,internally threaded sheet metal cylinder having integrahthere withplate-like diametrically opposed wings extending from free endportion'sof the 10 cylinder. i f

A further object is a novel process of making a bolt holding device ofthe character described above which includes the steps of (a) providinga sheet metal blank;

stamping threads upon the central portion of the blank; and forming thelatter portion to provide a longitudinally split, internally threadedthimble-like cylinderhaving p1ate-.

like, diametrically opposed wings extending from the free ends of thecylinder.

A still further. object is a device of the character described above.wherein the cylinder is slightly tapered.

A still further object is a device of the class described above whereinthe web which connects ends of the cylinder is cut away, at leastpartially, if desired.

Still furtherobjects will readily .occur to those skilled in the artupon reference to the following description and the accompanying drawingin which Fig. 1 shows a vice maybe made;

Fig. 3 shows a device in th'ep'rocess of I manufacture. V a

Fig- 4 shows a completed device.

Fig. 5 is a section as if on the line 55 of Fig. 1.

' Fig. 6 shows a'modified form, of the device, inuse. w v Referring tothe drawing it will beseen that the device includes a sheet 'metalcylinder 10 having one end closed by aweb 12] and so formed as to belongitudinally split along the diametrically opposed lines 14. Integralwith the cylinder and extending from the free endsof the latter arediametrically op.-

invention is a device of -at 38, the cylin device of the invention inuse. j terlock between :the bolt and the thimble and Fig. 2 shows ablank from which the dethat its closed end is slig 1931. Serial 1V0.540,489.

posed plate-like wings 16. Further, the cylinder is internally threadedas shown at 18 for cooperation with the threads of a bolt 20.

The device may be nade by a process which includes the steps of (a)providing a sheet metal blank 22 of the form of Fig. 2, the

blank being necked down as illustrated in- Fig. 2 at 24; (b) stampingthe threads 18 on the central portion of the blank .and forming thethreaded portion; to a trough-like, substantially cylindrical form asillustrated in Fig. 3, the'axis of the thus curvedthreads beingcoincidental with the axis of the trough and (c) deforming the parts soshaped along the lines X to form a longitudinally split, internallythreaded, thimble-like cylinder, having plate-like diametrically opposedwings abv 16 extending from the free ends of the cyl inder on thelines-X- -X.

One use of the device is illustrated in-Fig. 1. In this figure-there is.sl wn asheet metal PP 32-aligned with an aperture 34 in a woodensupport 36. The device islsecured to the sheet. metal panel 30 by spotwelding the wings 16 to the dpanel 30 on the spots indicated er 10extendingthru'the aperture' 32'. The supports are then brought togetherandthe bolt 20 is passed thru the apex"- ture in the washer 40,thru aperture 34, and into the thimble 10, its threads then engaging thethreads 18 of the thimble tojeifect aninthus to eifect asecureinent-betweenthe supports 30. and 3 6. r V J j V In Fi 6 there isdisclosed a device which, while'o the form of the device of Figs. 1 to5, is slightly different therefrom in that the web 12 is cut away toprovide an aperture -42 through which may project the screw bolt.

this figure the deviceis il- 1 44. Further, in

ort or panel 30 having an aperture at lustrated in connection" with twosheet metal panels or supports 46 and 48, to one of which, namely, 46,is welded the device, the. wings of the latter being disposed betweenthe supports as shown. I I V It will be observed that the cylinder 10,of- Fig. 4, is shown as havin a slight'taper so fitly smaller indiameter than its open end. A cylinder thus formed is more efficient inoperation than a perfectly straight cylinder, for the reason that thethreads of the cylinder engage the threads of the bolt more tightly asthe latter is-further threaded into the thimble.

It will also be observed that by virtue of the fact that the cylinder issplit on diametrically: opposed'lines, it is possible to make the devicein one piece from asheet metal blank and it is possible to stamp thethreads therein while the device is in flat blank form, thus eliminatingthe necessity of cutting threads in the cylinder.. Further the aperture42 in web 12 (Fig. 6) may be cut away while the device is still in blankform. I

It will further be seen that a device of this character may be made withthe use of a number of dies in separate operations or by a compound diein substantially one operation, these operations occurringsimultaneously or in rapid succession, as desired.

Further, it will be seen that'the device of this character may be madefar more cheaply than similar devices.

Now having described the invention and the preferred embodiment thereof,it is to be understood that the said invention is to be limited, notto'the specific' details herein set forth, but only by the scope of theclaim which follows What ll claim is:

That process of making one piece sheet metal bolt holding devices whichincludes the steps of (a) providing an elongated sheet metalstrip blank,(6) stamping threads on and transversely across the central portion ofsaid strip blank and forming the centrally threaded portion to atrough-like, elongated substantially semi-cylindrical form with the axisof the threads extending longitudinally, coincidental with the axis ofthe-trough, (0)

v folding the strip across the axis of the threads into a U to bring theends of the semi-cylindrical threaded portion together and (d) bendingthe ends of the strip away from the axis of the threads.

\ In testimony tion.

EDWD C. BAYNES.

whereof, I sign this specifi

